Hebei dashan fasteners co., Ltd babban kamfani ne na samarwa, wanda ke da tarurrukan samarwa da yawa.Kayayyakin kamfanin da kamfanin gine-gine na kasar Sin, rukunin layin dogo na kasar Sin, rukunin karafa na kasar Sin, rukunin kamfanonin sadarwa na kasar Sin, rukunin kamfanonin kwal na kasar Sin sun yi hadin gwiwa mai zurfi.
Kasashe da yawa sun fitar da manufofin da ba su yarda da amfani da fasahar walda don haɗa zaren a matsayin tallafi na tsarin gini a cikin gine-gine, don haka bullowar hannun ƙarfe na magance wannan matsala, ta yin amfani da hannun riga don haɗa zaren biyu tare, tsayayye kuma mai dorewa.